On the basis of the historical data recorded by court chroniclers, he brought out the first historical work in Chinese history, The Annals of the Spring and Autumn Period in which he expressed in an outspoken manner his own political views.

• 他依据鲁国史官所编的史料加以整理，以鲜明的政治态度编写和修订了中国第一部史书《春秋》。